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Table II
Target freezing temperatures tested per species and needle types (P: primary, S: Secondary). Asterisks represent the tested combinations.
| Test temperature | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Species | Needle type | –3 | –4 | –5 | –6 | –8 | –10 | –12 | –14 | –16 | –18 | –20 | –22 | –24 |
| P. canariensis | P | * | * | * | * | * | * | * | ||||||
| S | * | * | * | * | * | * | * | * | ||||||
| P. radiata | P | * | * | * | * | * | * | * | * | * | * | |||
| S | * | * | * | * | * | * | * | * | * | * | ||||
| P. pinea | P | * | * | * | * | * | * | * | * | * | * | |||
| S | * | * | * | * | * | * | * | * | * | * | ||||
| P. halepensis | P | * | * | * | * | * | * | * | * | * | * | |||
| S | * | * | * | * | * | * | * | * | * | * | ||||
| P. brutia | P | * | * | * | * | * | * | * | * | * | * | * | ||
| S | * | * | * | * | * | * | * | * | * | * | * | * | ||
| P. pinaster | P | * | * | * | * | * | * | * | * | * | ||||
| S | * | * | * | * | * | * | * | * | * | * | ||||
| P. nigra | P | * | * | * | * | * | * | * | ||||||
| S | * | * | * | * | * | * | * | |||||||
| P. sylvestris | S | * | * | * | * | * | * | * | ||||||